This is covered in the FAQ:
What happens if I don’t use all my monthly licenses in a given month?
With a small subscription plan, which includes 10 images a month, unused downloads carry over to the next month as long as your subscription is active. The carryover limit is 120 downloads. With large subscriptions, which include 750 downloads per month, unused downloads do not roll over.
It seems i have a subscription and have 100 images available but there is no icon to download.I have tried the troubleshooting steps with no success.
Please can you help ASAP.
I see you have recently licensed some images. If you still need assistance, please let us know.